Alright, I don't have a picture (which would help) but here goes..

I have an alright wardrobe, (blank t's, button ups, jeans and chinos, jackets, sweaters, cardigans, shoes, you know the drill..) but there's a problem..

>the problem is
Almost all of my outfits look pretty simple, like I'm always reasonably well dressed, but it just feels very plain..
Even when I layer up, it still always looks like there's something missing..

>What can I do to spice my outfits up?
Hats?
Wearing louder colours?
Jewellery?
Scarves?

Pic unrelated- it's how I don't look